SN65240P Equivalent & Substitute Parts

Part Overview

The SN65240P is a Transient Voltage Suppressor (TVS) device with mixed technology designed for circuit protection applications, particularly in USB interfaces. This through-hole mounted component operates at a 7V clamping voltage and is housed in an 8-DIP package. The SN65240P is currently in Last Time Buy status, indicating that production has been discontinued and existing inventory is limited. Finding equivalent substitute parts is necessary to ensure continued availability for new designs and ongoing production requirements.

Substiute Parts

SN65240P

Texas InstrumentsIn Stock: 872SN65240P Datasheet

Current PartRFQ

SN65240PWR

Texas InstrumentsIn Stock: 4781SN65240PWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN65240P is determined by the following critical parameters:

• Voltage - Clamping: Must be 7V to maintain circuit protection specifications
• Technology: Must be Mixed Technology to ensure functional equivalence
• Number of Circuits: Must be 1 to match the single-circuit configuration
• Applications: Must support USB applications
• Base Product Number: Must be SN65240 to confirm functional equivalence
• RoHS and REACH Compliance: Must maintain ROHS3 Compliant and REACH Unaffected status

The SN65240PWR qualifies as a manufacturer-recommended substitute because it shares the same base product number (SN65240), identical clamping voltage (7V), mixed technology, single-circuit configuration, and USB application support. Both parts maintain equivalent regulatory compliance. The primary difference is the mounting technology: SN65240P uses through-hole mounting, while SN65240PWR uses surface-mount technology in an 8-TSSOP package.

Parameter Comparison

Engineering Selection Recommendations

The SN65240PWR is the manufacturer-recommended substitute for the SN65240P. Both parts maintain identical electrical specifications (7V clamping voltage, mixed technology, single circuit) and regulatory compliance (ROHS3 Compliant, REACH Unaffected). The SN65240PWR is currently in Active product status with significantly higher inventory availability (4750 pcs vs. 775 pcs), making it the preferred choice for new designs and ongoing production.

Selection between these parts depends on board design requirements. The SN65240P through-hole configuration suits legacy designs or applications requiring mechanical robustness. The SN65240PWR surface-mount configuration is appropriate for modern PCB designs prioritizing space efficiency and automated assembly processes. Both parts deliver equivalent circuit protection performance for USB applications.

Frequently Asked Questions (FAQ)

Q: Can SN65240PWR directly replace SN65240P in existing designs?

A: Electrical substitution is direct due to identical clamping voltage, technology, and circuit configuration. However, board-level integration differs: SN65240P requires through-hole PCB pads and manual insertion, while SN65240PWR requires surface-mount pads and reflow soldering. PCB redesign is necessary for physical implementation.

Q: What is the significance of the package difference between 8-DIP and 8-TSSOP?

A: The 8-DIP package is a through-hole component with 0.300" lead spacing, suitable for breadboards and legacy PCB designs. The 8-TSSOP package is a surface-mount component with 0.173" width, enabling higher PCB density and automated assembly. Both packages contain identical die and deliver the same electrical performance.

Q: Why is SN65240P in Last Time Buy status?

A: Last Time Buy status indicates Texas Instruments has discontinued production of the SN65240P through-hole variant. The SN65240PWR surface-mount version remains in active production, reflecting industry-wide transition from through-hole to surface-mount technology.

Q: Are there compliance differences between SN65240P and SN65240PWR?

A: No. Both parts maintain identical ROHS3 Compliant and REACH Unaffected status, ensuring equivalent regulatory compliance for circuit protection applications.

Q: What is the moisture sensitivity level difference?

A: SN65240P lists MSL as Not Applicable due to its through-hole package design. SN65240PWR specifies MSL 1 (Unlimited) for its surface-mount package, indicating no moisture sensitivity restrictions during storage or handling.